Geometric Correction Method in Multi-Projection System
First Claim
1. A geometric correction method in a multi-projection system for displaying a contents image on a screen by combining images projected from a plurality of projectors, including a geometric correction data calculating step for calculating geometric correction data for alignment of the images projected from said projectors, said geometric correction data calculating step comprising:
- a projecting step of projecting a test pattern image composed of a plurality of feature points from each of said projectors onto said screen;
a capturing step of capturing the test pattern images projected onto said screen in said projecting step as test pattern captured images obtained by means of capturing means;
a displaying step of displaying on a monitor the test pattern captured images captured in said capturing step;
an inputting step of designating and inputting approximate positions of the feature points in said test pattern captured images, while referring to the test pattern captured images displayed in said displaying step;
a detecting step of detecting accurate positions of the respective feature points in said test pattern images based on the approximate position information input in said inputting step; and
a calculating step of calculating image correction data for the alignment of the images projected by said respective projectors based on the positions of the feature points in said test pattern captured images detected in said detecting step, previously given coordinate information of the feature points in the test pattern images, and separately predetermined coordinate position relationship between the contents images and the test pattern captured images.
1 Assignment
0 Petitions
Accused Products
Abstract
A geometrical correcting method allowing geometrical correction to be performed simply, accurately and in short a time, even in a multi-projection system including a screen of complex shape and projectors complexly arranged, for significantly improving the maintenance efficiency. Test pattern images having feature points are projected by respective projectors, and captured and displayed on a monitor, approximate positions of the feature points are designated and input while referring to the displayed test pattern captured image, and the accurate positions of the feature points in the test pattern images are detected according to the approximate position information. An image correction data for aligning the images projected by the projectors is calculated from the detected positions based on the feature points, the coordinate information of the feature points in a predetermined test pattern image, and the coordinate position relationship between a separately predetermined contents image and the test pattern captured image.
46 Citations
14 Claims
-
1. A geometric correction method in a multi-projection system for displaying a contents image on a screen by combining images projected from a plurality of projectors, including a geometric correction data calculating step for calculating geometric correction data for alignment of the images projected from said projectors, said geometric correction data calculating step comprising:
-
a projecting step of projecting a test pattern image composed of a plurality of feature points from each of said projectors onto said screen; a capturing step of capturing the test pattern images projected onto said screen in said projecting step as test pattern captured images obtained by means of capturing means; a displaying step of displaying on a monitor the test pattern captured images captured in said capturing step; an inputting step of designating and inputting approximate positions of the feature points in said test pattern captured images, while referring to the test pattern captured images displayed in said displaying step; a detecting step of detecting accurate positions of the respective feature points in said test pattern images based on the approximate position information input in said inputting step; and a calculating step of calculating image correction data for the alignment of the images projected by said respective projectors based on the positions of the feature points in said test pattern captured images detected in said detecting step, previously given coordinate information of the feature points in the test pattern images, and separately predetermined coordinate position relationship between the contents images and the test pattern captured images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14)
-
-
8. A geometric correction method in a multi-projection system for displaying a contents image on a screen by combining images projected from a plurality of projectors, including a geometric correction data calculating step for calculating geometric correction data for alignment of the images projected from said projectors, said geometric correction data calculating step comprising:
-
a projecting step of projecting a test pattern image composed of a plurality of feature points from each of said projectors onto said screen; a capturing step of capturing the test pattern images projected onto said screen in said projecting step as test pattern captured images obtained by means of capturing means; a multiple projecting step of sequentially projecting onto said screen a plurality of single feature point images each composed of a different feature point among typical feature points whose number is less than that of the feature points in the test pattern images; a multiple capturing step of capturing the plurality of single feature point images sequentially projected onto said screen in said multiple projecting step to capture as single feature point captured images; a preliminary detecting step of detecting accurate positions of the respective feature points from the plurality of single feature point captured images obtained in said multiple capturing step; a detecting step of detecting accurate positions of the respective feature points in said test pattern captured images based on the positions of the respective feature points in the plurality of single feature point captured images detected in said preliminary detecting step; and a calculating step of calculating image correction data for alignment of the images projected by said respective projectors based on the positions of the feature points in said test pattern captured images detected in said detecting step, previously given coordinate information of the feature points in the test pattern images, and separately determined coordinate position relationship between contents images and the test pattern captured images. - View Dependent Claims (9, 10, 11, 12)
-
Specification